Grief Prevention

2012-12-21 03:10:26 [SEVERE] Could not pass event EntityChangeBlockEvent to GriefPrevention v7.1.2
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
    at org.bukkit.craftbukkit.v1_4_6.event.CraftEventFactory.callEntityChangeBlockEvent(CraftEventFactory.java:457)
    at org.bukkit.craftbukkit.v1_4_6.event.CraftEventFactory.callEntityChangeBlockEvent(CraftEventFactory.java:445)
    at net.minecraft.server.v1_4_6.EntityEnderman.c(EntityEnderman.java:106)
    at net.minecraft.server.v1_4_6.EntityLiving.j_(EntityLiving.java:523)
    at net.minecraft.server.v1_4_6.EntityMonster.j_(EntityMonster.java:24)
    at net.minecraft.server.v1_4_6.World.tickEntity(World.java:1461)
    at net.minecraft.server.v1_4_6.World.entityJoinedWorld(World.java:1422)
    at net.minecraft.server.v1_4_6.WorldServer.entityJoinedWorld(WorldServer.java:573)
    at net.minecraft.server.v1_4_6.World.playerJoinedWorld(World.java:1412)
    at net.minecraft.server.v1_4_6.World.tickEntities(World.java:1290)
    at net.minecraft.server.v1_4_6.WorldServer.tickEntities(WorldServer.java:464)
    at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:567)
    at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
    at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:481)
    at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:416)
    at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.NoSuchMethodError: org.bukkit.event.entity.EntityChangeBlockEvent.getEntity()Lorg/bukkit/entity/LivingEntity;
    at me.ryanhamshire.GriefPrevention.EntityEventHandler.onEntityPickup(EntityEventHandler.java:254)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
    ... 19 more